Hauv cov khoom siv hluav taws xob, peb feem ntau pom cov duab ntawm DC / DC, LDO, qhov sib txawv ntawm lawv yog dab tsi, hauv kev tsim cov khoom siv hluav taws xob yuav ua li cas xaiv thiab yuav ua li cas tsim kom tsis txhob muaj qhov tsis xws ntawm kev tsim hluav taws xob?
DC / DC yog los hloov cov khoom siv hluav taws xob tas li mus rau lwm qhov tam sim no cov zis hluav taws xob, cov hom yog Boost (Boost), Buck (Buck), nce thiab nqis voltage thiab thim rov qab cov qauv. " linear regulators.Lawv ob leeg stabilize ib input voltage rau ib tug tej yam voltage, thiab lub LDO tsuas yog siv raws li ib tug step-down tso zis.Nyob rau hauv kev xaiv ntawm lub hwj chim nti mas them sai sai rau cov tsis:
1. Cov zis voltage.DC / DC tso zis voltage tuaj yeem hloov kho los ntawm kev tawm tswv yim tsis kam, LDO muaj ob hom kev tso zis ruaj khov thiab kho tau cov zis;
2, input thiab output voltage txawv.Qhov voltage sib txawv ntawm cov tswv yim thiab cov zis yog ib qho tseem ceeb parameter ntawm LDO.Cov zis tam sim no ntawm LDO yog sib npaug rau cov input tam sim no.Qhov me dua qhov sib txawv ntawm qhov sib txawv, qhov me me ntawm lub zog siv thiab qhov ua tau zoo ntawm cov nti.
3. Cov zis siab tshaj plaws tam sim no.LDO feem ntau muaj qhov siab tshaj plaws tso zis tam sim no ntawm ob peb puas mA, thaum DCDC muaj qhov siab tshaj tawm tam sim no ntawm ob peb A lossis ntau dua.
4. Input voltage.Different chips muaj cov kev xav tau sib txawv.
5. Ripple / suab nrov.Qhov ripple / suab nrov ntawm DC / DC ua haujlwm hauv lub xeev hloov pauv yog qhov phem dua li ntawm LDO, yog li lub voj voog uas muaj kev cuam tshuam ntau dua ntawm lub sijhawm tsim yuav tsum sim xaiv LDO fais fab mov.
6. Kev ua tau zoo.Yog tias cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob nyob ze, qhov txheeb ze ntawm kev xaiv LDO yog siab dua DC / DC;Yog tias qhov sib txawv ntawm qhov siab loj, qhov sib txheeb ntawm kev xaiv DC / DC yog siab dua.Txij li thaum cov zis tam sim no ntawm LDO yog qhov pib zoo ib yam li cov tswv yim tam sim no, qhov kev poob qis yog qhov loj heev thiab lub zog siv ntawm LDO loj dhau, qhov ua tau zoo tsis siab.
7. Tus nqi thiab cov khoom siv hluav taws xob peripheral.Tus nqi ntawm LDO yog qis dua li ntawm DCDC, thiab lub peripheral circuit yog yooj yim.
Post lub sij hawm: Mar-15-2022